The fundraising figure is significant for Hickenlooper, who’s considered a longshot to win the Democratic presidential nomination against rivals with bigger names or bigger bank accounts, such as Sens. Bernie Sanders of Vermont, Kamala Harris of California, Elizabeth Warren of Massachusetts, Cory Booker of New Jersey, Amy Klobuchar of Minnesota and Kirsten Gillibrand of New York.

And moving toward another White House run is former Vice President Joe Biden, who enjoys higher name recognition than any other declared or potential 2020 Democratic candidate.

Hickenlooper’s notable fundraising haul gives the newly announced candidate a little bit of cache as he now joins a field of Democratic contenders that currently stands at 14.

It was the same story earlier this week for Washington state Gov. Jay Inslee, who launched his White House bid on Friday. Inslee, who like Hickenlooper faces long odds of capturing the nomination, announced on Monday that he hauled in more than $1 million in contributions during the first two days of his campaign.

Klobuchar, who announced her bid last month at an outdoor event during a snowstorm, raised more than $1 million in her campaign's first 48 hours. And Harris, who launched in January, topped $1.5 million in her first 24 hours as a presidential candidate.

But the big winner so far in the race to make a fundraising splash is Sanders. The independent senator from Vermont – who’s making his second straight White House bid – hauled in nearly $6 million last month in the 24 hours after he launched his bid.